package edu.sctu.zhuyingzhi.month201506.day20150613;

import java.util.Hashtable;
import java.util.LinkedHashMap;

/**
 * Created by Administrator on 2015/6/13.
 */
public class DayClient {
    public static void main(String[] args) {
        LinkedHashMap<String,Integer> map = new LinkedHashMap<>();

        map.put("d1",1);
        map.put("c1",2);
        map.put("a1",3);
        map.put("a4",4);
        map.put("e3",5);

        System.out.println(map.keySet());
    }
}
